precursor的例句大全

The nanocrystalline ZnO particles were prepared by roasting basic carbonate precursor synthesized with very fine crystalline grain by using ZnSO_4.. 7H_2O, NaOH solution and NaHCO_3 powder.

以ZnSO4·7H2O为原料，添加NaOH溶液和NH4HCO3粉末，制备出晶粒细小的碱式碳酸盐前驱体。

The main aspects studied in this thesis include: ( 1) The influence of magnesium basic carbonate, the precursor in the carbonation method, on MgO activity and particle size under conditions of different stoving temperature, pyrolysis style and grit number.

碳化法制备的前驱物（碱式碳酸镁）在烘干温度、热解方式、过筛目数不同等各种条件对氧化镁活性及粒度的影响。

The solubility of the precursor ceric hydroxide in nitric acid, recycle of crystal mother liquor of ammonium ceric hydroxide, and recovery method for cerium in mother liquor have been investigated.

讨论了前驱体氢氧化铈的硝酸溶解性能、硝酸铈铵结晶母液的循环利用、结晶母液中铈的回收方法。

3-Diethoxyethylcyanide was an important precursor for synthesis of vitamin B1, cytosine and its derivatives.

3-二乙氧基丙腈是合成维生素B1、胞嘧啶及其衍生物等重要化合物的前体。

A Wells notice is a precursor to a civil lawsuit in an SEC investigation.

“威尔斯通知”预示着在SEC的调查中将提起民事诉讼.

As one of the main precursor of poly ( phenylene sulfide amide), 4 chloro N ( 4 ′ chlorophenyl) benzamide ( DCBA) of high purity was two step synthesized from 4 chlorobenzoic acid and 4 chloroaniline with good yield.

以对氯苯甲酸和对氯苯胺为主要原料，高产率获得了4－氯－N－（4′－氯亚苯基）苯甲酰胺（简称DCBA）。

Amine precursor uptake and decarboxylation system

胺前体摄取及脱羧系统

Image analytical instrument is employed to study the section pattern of various deniers precursor fibers as well as quantitatively analyze and contrast their section area, perimeter, roundness and diameter.

采用图像分析仪研究了不同纤度原丝的截面形态，并对截面面积、周长、圆度、直径进行了定量分析、比较。

CH 4 is the main component of the escaping gas discharged from the anomalous site in Longqingxia reservoir, Yanqing County. It is mainly originated from biogenic reaction but not an earthquake precursor anomaly.

延庆龙庆峡水库翻花冒气异常释放的主要气体CH4来源于生物成因，而非地震前兆异常。

In this study, The Ti-PILC synthesized by the pillaring of Ti-precursor from the hydrolysis of modified TTIP with acetate group in water was firstly reported.

在本研究中，首次报道了乙酸改性钛酸四异丙酯水解制备钛溶胶的方法合成钛层柱粘土。

Accurate and stable outlet flow rate can be obtained by adjust the screw in precursor valve.

只需调节导阀的调节螺钉,就能获得精确、稳定的出口流量.

Thus, thematically, Thomas Hardy can be regarded as the precursor to modernism.

因此，就其创作主题而言，哈代堪称现代主义先驱。

All children underwent evaluation for risk factors for diabetes or the precursor condition, pre-diabetes.

所有这些孩子都有患上糖尿病或糖尿病前期 、 前驱性糖尿病的风险.

The submicron white Y_2O_3-PSZ pow-ders are obtained after calcination of the precursor zirconium hydroxide.

氢氧化锆前身粉末煅烧以后，可以得到亚微米级白色的Y-PSZ微粉。

Synthesis of a Precursor of Serotonin Transporter Imaging Agent [~ ( 11) C] DAPA

5-羟色胺转运体放射性配基[~（11）C]DAPA前体的合成

The results indicated that isoamyl acetate was a quite excellent azeotropic solvent, it effectively prevented the agglomeration of particles and greatly improved the fluffiness of the obtained dried precursor powders.

结果表明，乙酸异戊酯溶剂是一种非常理想的共沸干燥有机溶剂，其有效防止了粉体的硬团聚的形成；

Dry-jet wet-spinning precursor fibers have a smooth surface.

干喷湿纺原丝及碳纤维表面光滑无沟槽。

Dry-jet wet-spinning process of PAN precursor for carbon fibers

聚丙烯腈原丝及其干喷湿纺

The results show that high concentration NO-2-N in water can consume ozone dosage by 40% and reduce the removal rate of THMs precursor and the enhanced degree of biological degradation ability of water after ozonation.

结果表明，水中较高浓度的NO-2-N可消耗臭氧投加量的40%左右，并降低了臭氧对THMs前体物的去除率，也影响其提高水中可生物降解有机物浓度的能力；

Objective A rapid color test for screening gamma-hydroxybutyric acid ( GHB) and its precursor gamma-butyrolactone ( GBL) was investigated in drink and urine samples.

目的建立化学显色法快速筛选饮料及尿液中γ-羟基丁酸（GHB）及其前体γ-丁内酯（GBL）的方法。